OsCBSCBSPB4 is a Two Cystathionine- β-Synthase Domain-containing Protein from Rice that Functions in Abiotic Stress Tolerance.

OsCBSCBSPB4 is a Two Cystathionine-β-Synthase Domain-containing Protein from Rice that Functions in Abiotic Stress Tolerance. Curr Genomics. 2018 Jan;19(1):50-59 Authors: Kumar R, Subba A, Kaur C, Ariyadasa TU, Sharan A, Pareek A, Sopory SK, Singla-Pareek SL Abstract Cystathionine β-synthase (CBS) domains have been identified in a wide range of proteins of unrelated functions such as, metabolic enzymes, kinases and channels, and usually occur as tandem re-peats, often in combination with other domains. In plants, CBS Domain-Containing Proteins (CDCPs) form a multi-gene family and only a few are so far been reported to have a role in development via regu-lation of thioredoxin system as well as in abiotic and biotic stress response. However, the function of majority of CDCPs still remains to be elucidated in plants. Here, we report the cloning, characterization and functional validation of a CBS domain containing protein, OsCBSCBSPB4 from rice, which pos-sesses two CBS domains and one PB1 domain. We show that OsCBSCBSPB4 encodes a nucleo-cytoplasmic protein whose expression is induced in response to various abiotic stress conditions in salt-sensitive IR64 and salt-tolerant Pokkali rice cultivars. Further, heterologous expression of OsCBSCB-SPB4 in E. coli and tobacco confers marked tolerance against various abiotic stresses. Transgenic tobac-co seedlings over-expressing OsCBSCBSPB4 were found to exhibit better growth in terms of dela...
Source: Current Genomics - Category: Genetics & Stem Cells Tags: Curr Genomics Source Type: research